Pang, W W The peripheral analgesic effect of tramadol in reducing propofol injection pain: a comparison with lidocaine. [electronic resource] - Regional anesthesia and pain medicine - 246-9 p. digital Publication Type: Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial ISSN: 1098-7339 Standard No.: 10.1016/s1098-7339(99)90136-0 doi Subjects--Topical Terms: AdultAnalgesia--methodsAnalgesics, Opioid--administration & dosageAnesthetics, Intravenous--administration & dosageAnesthetics, Local--administration & dosageDouble-Blind MethodFemaleHumansInjections, IntravenousLidocaine--administration & dosageMaleMiddle AgedPain--drug therapyPain MeasurementPropofol--administration & dosageTramadol--administration & dosage